In our modern time the art of exposing snakes has become a daily thing. Like the whole Kim K calling out the old Taylor for talking shit about her husband, it's fine. Sometimes things go too far and permanent decisions are made that are tragic and can't be taken back. Everyone is forever dipping their spoon in the pot and stirring it in order to make a minor situation into this huge unnecessary event, that would've been kept between the people the situation involved in the first place.
Whenever a relationship is ended, be it romantic or a friendship, people tend to be unhappy. They're tempted to disclose personal information that has been disclosed to them in order to seek revenge to satisfy the craving of having the other person feeling worse than they already do. Just so you know, the feeling is mutual on both ends, unless you're crazy, one side may be feeling like they've dodged a bullet. In that case the other side doesn't give a shit, it's fine.
Anyway, but even though you're craving the havoc, that does not mean you should follow through with it. Not even if the person was a piece of shit to you, the only thing you're accomplishing is stooping to their level and becoming a piece of shit yourself. Even worse, depending on if you stoop lower than their level, you become a pile of shit.
Now you're asking, "What if I exploit my information too?"
Still. Do not disclose other people's information. It is not your information to disclose. You disclose what you want and you're the one responsible for your actions. You have ownership over the unique things that make you up, a lot of times things people choose to open up to you about are referencing embarrassing things they're uncomfortable talking about, mental health issues, physical health issues, etc. They do that because they trust that whatever happens you'll keep it to yourself. Sometimes people are little bitches and tell everyone. Everyone is guilty of that though, I know I'm guilty, but after learning and growing, I've been wrong, and I would've potentially really hurt someone by twisting my knife in their back that would've never picked up in the first place.
According to the first amendment freedom of speech protects most actions when disclosing information; however, if the information revealed by the person who said it isn't true or defamatory (harmful to you), you may be able to sue for damages. Damages may be hard to prove, but there are definitely repercussions for negligent actions.
Just a public service announcement. Just because someone was an asshole to you doesn't give you the right to be an asshole too. It only makes you feel worse unless you're a petty person and you thrive off of being petty, then do whatever. Only God can judge you. This was just a public service announcement informing you on the art of exposing people, and why you shouldn't do it.
Don't be a piece of shit, it's so simple to just shut the fuck up and swallow your pride and move on from it. Moral of the story, let people expose themselves. It's not your business.
Good day.